diff --git a/metadata/com.example.deeplviewer.yml b/metadata/com.example.deeplviewer.yml
index d2bf59125c..280009a514 100644
--- a/metadata/com.example.deeplviewer.yml
+++ b/metadata/com.example.deeplviewer.yml
@@ -115,7 +115,18 @@ Builds:
     gradle:
       - yes
 
+  - versionName: '6.4'
+    versionCode: 22
+    commit: 6d149f1fe83af011fd48a8120de4e83229cbce64
+    subdir: app
+    sudo:
+      - apt-get update || apt-get update
+      - apt-get install -y openjdk-11-jdk-headless
+      - update-alternatives --auto java
+    gradle:
+      - yes
+
 AutoUpdateMode: Version v%v
 UpdateCheckMode: Tags
-CurrentVersion: '6.3'
-CurrentVersionCode: 21
+CurrentVersion: '6.4'
+CurrentVersionCode: 22